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3 years ago

Plz help need work to be shown if answered: Will make the first answer Brainliest

Mathematics

2 answers:

Molodets [167]3 years ago

6 0

The first answer. (1)

ankoles [38]3 years ago

4 0

Answer is #1

we know it’s not 2 and 4 because it needs to be less than or equal to 10 dollars, which is what 1 and 3 are.

then, it says strawberries (x) are 1.60 per pound and raspberries (y) are 1.75 per pound. out of 1 and 3, number 1 is the only one that shows that. number 3 says that strawberries are 1.75 and raspberries are 1.60, when it’s the opposite

so, correct answer is #1

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Solve 3x2 = −12x − 15. x = −4 ± 2i x = −4 ± i x = −2 ± 2i x = −2 ± i

diamong [38]

ANSWER

$x = - 2 \pm i$

EXPLANATION

We use the method of completing the squares.

The equation is
$3 {x}^{2} = - 12x - 15$

We rewrite the above equation to obtain;

$3 {x}^{2} + 12x = - 15$

We divide through by 3 to obtain;

${x}^{2} + 4x = - 5$

We add half the coefficient of
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${x}^{2} + 4x + {2}^{2} = - 5 + {2}^{2}$

The right hand side is now a perfect square.

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We now take square root of both sides to get;

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We simplify to obtain,

$x = - 2 \pm i$

3 0

3 years ago

Joan has a stalk of celery that is 6 inches long. She cuts it into two pieces. Each piece is the same length. How long is each p

Mila [183]

3 inches
5 inches are the answers

5 0

3 years ago

Read 2 more answers

Mae Ling earns a weekly salary of $315 plus a 6.0% commission on sales at a gift shop. How much would she make in a work week if

Radda [10]

Answer:

$561

Step-by-step explanation:

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4 0

3 years ago

Can somebody help me, please?

Sveta_85 [38]

Answer:

a. $x=10 \textdegree$

$m\angle L=39\textdegree\\\\m\angle M=51\textdegree\\\\m\angle K=90\textdegree$

Step-by-step explanation:

a. We know that angles in a triangle add up to 180°.

-The right angle triangle in the right triangle has a measure of 90°.

We can therefore equate our angles to 180° and solve for x;

$180=\perp\angle+(2x+19)+(3x+21)\\\\180=90+(2x+19)+(3x+21)\\\\90=5x+40\\\\5x=50\\\\x=10\textdegree$

Hence, the angle measure is x=10°

b. Having calculated the value of x from a above as x=10°, we can substitute to find the measures of the two acute angles:

$m\angle L=(2x+19)\textdegree\\\\=(2\times 10+19)\textdegree\\\\=39\textdegree\\\\m\angle M=(3x+21)\textdegree\\\\=(3\times 10+21)\textdegree\\\\=51\textdegree$

Since, the m∠K is a right angle, it measures 90°

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3 years ago

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geniusboy [140]

Answer:

it's b

Step-by-step explanation:

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